{
  "manageEntity": {
    "action": "Save",
    "entityId": "565870",
    "entityType": "Track",
    "nonce": "0x79d6cf536aa73c3176bbb679438ccb3fd3ec3a4acee97b9ece306b7dd8f43ec7",
    "signature": "0x31c2d39566bf443358ba8f0f22b3fd5b8b73d5a3ecbdc41dbd34e0155418991a1c69f5f44eea234ab9a639bc2d3e47473c9e42676a275ca368bda55b9176d1391c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}