{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0xb163d7a11c86ba18d1fa379d43b298e54af6950b338398514d5dcc1e46d8323d",
    "signature": "0x9788192bb54a0ea18e5006a5799f3eefbd26a97b734ad161adf6a151fed0fff857d0871459e47093e135cddd585dd6d247079bbb7ec3c506b9e76494ac255e861c",
    "signer": "0xF7F56DF4D8a2Ae2BF9Ca645DC684f84c37BbDaFe",
    "userId": "116272245"
  }
}