{
  "manageEntity": {
    "action": "Save",
    "entityId": "826852",
    "entityType": "Track",
    "nonce": "0xb2cc3770857032a63716137497b97c4ef0ecbd6bb4fb4e7272a084fe5d0f8c5e",
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    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}