{
  "manageEntity": {
    "action": "Save",
    "entityId": "170747414",
    "entityType": "Track",
    "nonce": "0xe0001051c577c048eae1bcdab32453248eef0e6cef355c66ab8c40279772bf9d",
    "signature": "0x14a061f6ceacd3f9802798cf89cddb6778aaee8194e86f3fc219a47f44db30c953e10988ca97ee95fcd8244cc0b0b79ea50474ff2a5b1432397eea9cdfa47d711c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}