{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "631756877",
    "entityType": "User",
    "nonce": "0xf1b05fd74b5aeb81d28c937f1359888c0e792585c8d206a2549600d4b798c06b",
    "signature": "0xacc3de81e28f610f519169d373fd0f693b61effbb5eeb2d03bcca8d45eb7130b07c5fafb0f676d6c4cb3dbc7ff9cc678af660a3e127d22b017eb6adb3fc87eda1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}