{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "254187418",
    "entityType": "User",
    "nonce": "0x671cdfde994653a6a9463628abad4bfc1fb3a4fa1c6b77df71e70a8e06c3a15b",
    "signature": "0xac59c8820a343371dd8fdbdb6e2fef425dfb4d922847039ff2ff514ab8b874b26609ce70ddf3eaef51dadc578b1005d1f457234b1dd0951a9105bf820f9e041f1b",
    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}