{
  "manageEntity": {
    "action": "Save",
    "entityId": "1027695",
    "entityType": "Track",
    "nonce": "0xaf807f93907822ed3048157e8a3f79128ac86db77d25c3909859017bc6f902ee",
    "signature": "0x4688ac7eca74a046ffc9eadbf23c11205987d0467b28df726ee4efb32dc6114823854d2fe9446644f2a00c9c20138b4eedff1817966b107e5e95e07bada29be01b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}