{
  "manageEntity": {
    "action": "Save",
    "entityId": "1114606",
    "entityType": "Track",
    "nonce": "0xb3af0cd1f7280ca819ef7fd5b68f5c24d362e3be1068b72e0cb8a5da6cc5adc6",
    "signature": "0x4b7015df90b2573f249ff71a0f49ceac92bc9eaeab45a1f13ff8e8da095037d43b63cc837e027948ce7eac8e2eaa0078bd02bdb6470e4c4180fcf43744f53d671b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}