{
  "manageEntity": {
    "action": "Save",
    "entityId": "2054895027",
    "entityType": "Track",
    "nonce": "0xe95c592851eec70d6a186aa853b9863bbb91ab05fab308684ba8310f0ed596fd",
    "signature": "0xd8c1fd88be084ca75127949454fe1151b06d262a49ef701439c0f0e5bd274a6a49b968871996f9d1726ff1a4f0cc7881910156ba887c7b4fb26bec4b8040a5a71b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}