{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1599fd99800569c4268a7d4e5e5e42e5fdda44dbee0edd23f6e1060a1e5f2dc4",
    "signature": "0x06bc51fdf7ca75f4ed32ac327e0adbecba9b1d0d5dcda1457430edfcc52397604178b5c72b957c55567910f2d42f42ad80e66288b82fb57aa9ea77097a4704f61c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}