{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xf2b7d12b7a2dcb702833b012caa8c29e32663b8041b51fdac07d16be94cee865",
    "signature": "0xf413e848a8f68255e300f0ed15850a1bc98d7929a4d6e3d003a9831a0611905a01355c10c7041d09d4827bb1599f2da85426112b94ea4108bbefe359da9c815b1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}