{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa206247904da70830254cfdbca7cbc77042bbcd5caba065aa3adf3a59b72bc4b",
    "signature": "0x3e5b13a3c0c8b09c631da8d5ee1e302f176b5a863a5c80f66e94e1a2ebda90907b39238e3cb49baf1642b234cbd85228f58036ea3157447687e95cfef077157f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}