{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "225324815",
    "entityType": "User",
    "nonce": "0x6f53e3f3a4c36022fc8ff6a7e816fd7c50e18fbb8863dbcb929f3f7069689bd4",
    "signature": "0xbfe438776793a0e29c5295729e86ce9ec7bf6ca1fd349d903891ec91580a48752bef935c0da61be8298e728116d9b60efbc21ca847b8923c4046666507d63ff71c",
    "signer": "0xb99C26747D29b7F4376FAc35C8462179e32e43af",
    "userId": "391851422"
  }
}