{
  "manageEntity": {
    "action": "Save",
    "entityId": "1359129114",
    "entityType": "Track",
    "nonce": "0x77f63f98fbd8d4b26d66ef171826f8dec1e426d785c82228ae12a673ca2972db",
    "signature": "0x5abc41f9894e72bd778828577a25e8fb549b13454aa1fce22e6db51c7199e43f459e430a2fc9daf144a99e9861a9b8d114d2dc25461e4f18f46518be7462eb171c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}