{
  "manageEntity": {
    "action": "Save",
    "entityId": "148170845",
    "entityType": "Track",
    "nonce": "0x06caf135eed8cfa6b50740115a319f78bc6ef3a3abe226200f0850592c929b91",
    "signature": "0x31e789ed0679b6ed55319f405360167eb4b8ccbcba33bda4dd324514aa9b266d04b19739bbc965a41c93ae4ed032eab743f3223467a270d00003f46e1bdc9d2d1b",
    "signer": "0x862060c02F28f6984692E1Ab0f15419eFdc91D0A",
    "userId": "321032997"
  }
}