{
  "manageEntity": {
    "action": "Save",
    "entityId": "1941979964",
    "entityType": "Track",
    "nonce": "0xc6c73175e4abe9e695fe647d0988c7c34cc165759a50890302cd5fd0a6df6fc3",
    "signature": "0xe78fa35212fa6a8a9609bded4c8756b528e27964a9ceed3213fecf4f47d018c475e43dd8667c2acc77d395a2b11667b5301f329471847133e4f341fccee35e171b",
    "signer": "0x53d8e61f7BdCd69E26B5AAe8F197464091224DB4",
    "userId": "99786"
  }
}