{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "903567804",
    "entityType": "User",
    "nonce": "0x5b3ec10eefbb1c4e6a163c2c65c26eee6efe5c6fee513ebfe34805d0a2ffdcf7",
    "signature": "0x1a8ad79034dd225741e3fd1055d81d32677b5f86f7f9496393f43edacf9ba4f8628787d4e4e81d35c1517d45a5fb839c49d6cb9248fa858f71904017ffee15e81c",
    "signer": "0x1ECA0F6DD9Df100D61052dBc7c940eE29846e69c",
    "userId": "704556561"
  }
}