{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "218728810",
    "entityType": "User",
    "nonce": "0x24df9b7c19abb5531447b24bd6ccd0cf80fb53d7793404b2cc1d9fdf1a6da884",
    "signature": "0x3b68c33f2fb992720697d1a3f3eca822cd646a47a1fd8eef1774a021f05fc24c099635e8da5461696e85e806dbc3804a012690e31b81de3b58099340b9cec0731b",
    "signer": "0x4df845f0a31d75ecdeF1019e502eCEBCb209BE06",
    "userId": "742768859"
  }
}