{
  "manageEntity": {
    "action": "Save",
    "entityId": "1511366892",
    "entityType": "Track",
    "nonce": "0x1dba69c5e92dd1553cdb5720c22cff087e9f3b5af5fbb0139aa271ec88fe2cd5",
    "signature": "0xb0cc140e86b3b58a772434e63942d627f2f677ce08ffc5cac111d28914af47782a8d0b351a4080931c6dce2eb2dac1b49c991172fe6c388a8037c2b734063ad31b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}