{
  "manageEntity": {
    "action": "Save",
    "entityId": "11925538",
    "entityType": "Track",
    "nonce": "0x99851e3ef4f934b1a09426d125126fd76d893a9c8dc78d8d738cfa29e9efa5a3",
    "signature": "0x5ace86236b08c5bfb137cd0a0b8de49dc02ce2d9d0c214acb938c085cf768c7d37ba5b88a058df86a963878afb6537fd6e6ed7c99cd1c70a8149020325b7dcbd1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}