{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "804422713",
    "entityType": "User",
    "nonce": "0x87a597adbd9f808eeba37c2b78d2c4617c6a2aa63458f21305d95add013e50c6",
    "signature": "0x4f772148f327e6c25f7df1bda9ecda55c1eafaf44417d1c391fd85a4ec805b8831b9276f6e52b86d81462da2d7bdb8ace02b71d8fc5f873c7f132e363cc201561b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}