{
  "manageEntity": {
    "action": "Save",
    "entityId": "183514871",
    "entityType": "Track",
    "nonce": "1790006075675768673",
    "signature": "0x3fa8f761e0eea4094fc0ddb76ebc542c9b8ee1996c0d1e7a8c07dc349b74689b1289d544d6901017563caf78e7e4c249e5fafd050271935e2b32f04566f367291b",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}