{
  "manageEntity": {
    "action": "Save",
    "entityId": "216230344",
    "entityType": "Track",
    "nonce": "0x20fa9c5427b1b022875d4511a34bb2464966344ec9c86ec6447201b0e654db34",
    "signature": "0xb3b11dccb9dba34f6ff2c7d7e43ac1a1257ae0f1d867a2a1285a0a5110bd17b60445be95f8de74ef7787b2144b58a57f035d53c8766b120afabf9d54b3c6e4411c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}