{
  "manageEntity": {
    "action": "Save",
    "entityId": "1763007597",
    "entityType": "Track",
    "nonce": "0xbc5708d1096af24eba273de8f61ceff5ab69201de833303954fa9d624756c23f",
    "signature": "0x77bc4531a15d8491a73652bcb68ee40a59d80a4bd6ece4c38469871765258cef57b96f6ac740c1774c651dd02d73c9d8dac99db8a5d847ec9d502195fcf172781c",
    "signer": "0x1A0e34aBD5374BDd677c5de4D5D9718089cB05Eb",
    "userId": "644286186"
  }
}