{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7fadca091e18266c545723d508e47f5a3cdb5ecf1f6e00350da5b5e46dbf8266",
    "signature": "0xe14419e0603debf3b59c21659458348f7c3d2c8ae5137197042502a61d39c351477cb303668379a2ac6b341bf4b649eac7f7e156bc9e2542989850dd4e2ab5551b",
    "signer": "0x5208753Af79a487Eb27DF68Ad6064d881FfEA3a2",
    "userId": "517439381"
  }
}