Near: v1.signer users

dbt_subprojects/daily_spellbook/models/near/v1_signer/near_v1_signer_users.sql

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+{{
+  config(
+    schema = 'near_v1_signer',
+    alias = 'users',
+    materialized = 'table',
+    post_hook = '{{ expose_spells(\'["near"]\',
+                                    "project",
+                                    "v1_signer",
+                                    \'["bh2smith"]\') }}'
+  )
+}}
+
+-- PoC Query: https://dune.com/queries/4642523
+SELECT
+  receipt_predecessor_account_id as account_id,
+  json_extract_scalar(action_function_call_args_parsed, '$.request.path') AS derivation_path,
+  CAST(json_extract_scalar(action_function_call_args_parsed, '$.request.key_version') AS INTEGER) AS key_version
+FROM {{ source('near', 'actions') }} action
+JOIN {{ source('near', 'logs') }} log
+ON action.block_height = log.block_height
+AND action.receipt_id = log.receipt_id
+WHERE
+  receipt_receiver_account_id = 'v1.signer'
+  -- Deployment block of v1.signer: https://nearblocks.io/txns/79BBi3H3XgzktscGqKDZHAiNGRseuAJuYCmHkxKFLNif
+  AND action.block_height >= 124788114
+  AND log.block_height >= 124788114
+  AND action_kind = 'FUNCTION_CALL'
+  AND action_function_call_call_method_name = 'sign'
+  -- $ echo "eyJyZXF1ZXN0Ijp" | base64 --decode ==> {"request":{
+  AND SUBSTRING(
+    action_function_call_call_args_base64,
+    1,
+    LENGTH('eyJyZXF1ZXN0Ijp')
+  ) = 'eyJyZXF1ZXN0Ijp'
+  AND index_in_execution_outcome_logs = 1
+  GROUP BY 1,2,3

dbt_subprojects/daily_spellbook/models/near/v1_signer/schema.yml

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+version: 2
+
+models:
+  - name: near_v1_signer_users
+    meta:
+      blockchain: near
+      sector: authentication
+      project: v1_signer
+      contributors: bh2smith
+    config:
+      tags:
+        ["near", "v1_signer", "mpc", "chain_sigs"]
+    description: >
+      This table contains user signing activity on the NEAR blockchain for the `v1.signer` (MPC) contract. 
+      It extracts sign requests and associated metadata from function call arguments and logs.
+    columns:
+      - name: account_id
+        description: "Account ID that requested the signature"
+        tests:
+          - not_null
+      - name: derivation_path
+        description: "Derivation path for the key used in the signing request"
+        tests:
+          - not_null
+      - name: key_version
+        description: "Version number of the signing key"
+        tests:
+          - not_null