{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0a5ff9db5d7d9bf0d6c34a86dd80bbdd0cdc7c5cf2dd4e69621f598a39d26deb",
    "signature": "0xfd9dce9fada7d67d40b5317274ff5465997b50ceb414ed0bb0adaab3bbff08c1280fcc10c2e5577812f94ddd29cee9d7b3567ed0b2ebb49889b0c489c44a23131b",
    "signer": "0x103EFd86556c1E09c310A448F94b66B52Beaf6fe",
    "userId": "654287712"
  }
}