{
  "manageEntity": {
    "action": "Save",
    "entityId": "1179787165",
    "entityType": "Track",
    "nonce": "0xf7a4a8aae21e367f92cd29ff17681ffdcd8700da3a1f0cc5bc4cb9ff8dad15be",
    "signature": "0xa1b6734352e48395f30faa91cae11a074cff56ce18bcc527342b8431cba763344ea1cc8ee4eb5c96eca04492c8e3bd4f8d120653f92db61667fda090998b25761c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}