{
  "manageEntity": {
    "action": "Save",
    "entityId": "200182",
    "entityType": "Track",
    "nonce": "0xacb2241f275770e33817a79f6a5204a464d0b8e886dbafec1900788bf4d7789a",
    "signature": "0x35c28067922507b3ce66e4ff78889beee317405ae3f49a68cb25f7c4cd0dc3716140631eadf4fca9766b1a4f50beccb7622923b391059f921d41a1c0ff0076ed1c",
    "signer": "0x4c5AC7e7680c83116F534d4e30E2061A8D8363AB",
    "userId": "311402344"
  }
}