{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4263e865aa57546bcdacc95bfeba7c43c22dd0a4e0d910cf4a1a8dcf3166e849",
    "signature": "0x2f5a37ae6bafd3831638512436423f580cb5328c0e45c2bf8f762c20551d95a378724cb241f67f45235e5a24301fae8b6ae21a2e72bf939ba04270e80a3dd6071c",
    "signer": "0xfacdF66002EfDe05aA9536CC8bC11099e6F64435",
    "userId": "706590281"
  }
}