{
  "manageEntity": {
    "action": "Save",
    "entityId": "2061137709",
    "entityType": "Track",
    "nonce": "0xfa2addff3bf32b7d4366b5b16e6b4aa3e3504915b21fd1be66f83d8a439750aa",
    "signature": "0x9a61d5d172a9b90fdb111ef512465b45e9ad5139a6b3a727b223b22e61df655c40cea9113f1f293cfb648cd6ae46e6c6352af688c169f81a03240c156ad74d191b",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}