{
  "manageEntity": {
    "action": "Save",
    "entityId": "83402128",
    "entityType": "Track",
    "nonce": "0x39cd6489bf8fcadd8e287456047b0544e535ca34a7992013a50913a2a3f5174d",
    "signature": "0xb29e67ebd93ade3417fa4df7ff2c0161e01da198728a744fb7d61fd9b928bc421df4ed62bfe80a152118d656b4de534a152bbce69fdf67331e8ada0e40f131281c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}