{
  "manageEntity": {
    "action": "Save",
    "entityId": "1022014838",
    "entityType": "Track",
    "nonce": "1788399941010676890",
    "signature": "0x77578b21fcd0e0e7993ca3d14cf036c688491838c2ceb98c0bbf6359457d713d026df9eb43451a47aacfc1fd59f464e3e002e3a069c4179b30f233ba596c13f01c",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}