{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0a9aece95d16634c92804441817a47c3d4b3e7c153466f2366eda8a6fc189d18",
    "signature": "0x53540691156be9c66163a24308fc3b576156829be98edd1856caf49d6095d3b65b68424013e3cfb8162208aa587dda643e36790c720f884f5d5e40678009d36f1c",
    "signer": "0xa54f9bCC400F30D5B6751e9FFbe2529bFFD425dA",
    "userId": "366298414"
  }
}