{
  "manageEntity": {
    "action": "Save",
    "entityId": "1020114371",
    "entityType": "Track",
    "nonce": "0x472dc27e8e1c43be0e2a47edf37d126b2991b2c3e1c406c994285128fadb4838",
    "signature": "0x030623a3543159008a743f4ea904eb4f40f9d897a52029983ba0dab350d363b357674c06ef99f11f7f7a70d68c064664614c23677a9147e6fe09d86f747a3d581c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}