{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1575278",
    "entityType": "User",
    "nonce": "0x040424b8889e7fcc9d48e00f9c5ccb0d1b90b31e13c332e55840e7fbc89d38a3",
    "signature": "0x9e8799ee3fba5ee83a7a22896f6e27a7faf31ce799d699145c4b93238de0100a5ba0c426a227e80670306cbb11cca4993dd58588d06e4b5170e39399c2fb08a31c",
    "signer": "0x775bA7FB8a4FF9354c099465ca493BA949FdAca6",
    "userId": "597677270"
  }
}