{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781543844",
    "entityType": "User",
    "nonce": "0x62c0905460f80439820799ce42ffa889f23e1b45a24a36c368699e04b1fd7b74",
    "signature": "0xead6e618520868d4439aaa57b4e23b1a381a513c80eda11ea28c0588b5ca283c3f6fc65156528bd8bd90f14650e5d16a30c11060793aced94c2499e498fd076a1b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}