{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x345ad5b81b48a8b476f41b937518d03d416f67f5d342cf1be0db80e2b82babfe",
    "signature": "0x77bde6d21dc1647dde0a7aba20e0d1c4d2bee1d536955c272286a7f3fd5fb2dd1706fd3f05daf7f4f841e367d8e9c5720333f48d458f97db46031b5f30b7c1871c",
    "signer": "0xFA3145c9374a2505F95CEdDa8F65dB4dEAEAC626",
    "userId": "239263094"
  }
}