{
  "manageEntity": {
    "action": "Save",
    "entityId": "1232271586",
    "entityType": "Track",
    "nonce": "0xa50d3e8f8da0c701b684ac0abee619adae2038b514fc8ce88a8b5c09dab5ae56",
    "signature": "0x39ce6179754e95a75162f611deec856a470e4372d766678e8ea264b412e42b1e387b1e2c3347deb8ced9b4126c1108eb728d673d3db8e582eaf0d130856a530e1c",
    "signer": "0x75387BeED3d3B040a54C3e303fF0B07Da67a9186",
    "userId": "223536026"
  }
}