{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x98f715261460fea1cdbb3669fd24a249130c7b03b781acd839977a5a559ad2b8",
    "signature": "0xf5faba8ff5cd5e135957d91c201a26186703573334c8b198ea0f2c951053ade919426ec396f87a7355664f8f3880228140530ad0d69952b66852d0be22dd99971c",
    "signer": "0x8FfE4D68AfdF34240202742331b49cb462b7e26C",
    "userId": "660197861"
  }
}