{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123395122",
    "entityType": "User",
    "nonce": "0xb58f68aac25a36fdcfb4509a72f38bbacf26f8305766c665f1ec31ce5dca3bee",
    "signature": "0x58ca28eb2157333e2320d665042c155781a81d42c7b6ed75e0a4e2e3fe577df0040291d156ecaa5d270466287744924d9dbefb7671cb71559a8c4aece2debad91b",
    "signer": "0x2b012Ef37cb9315271f0AC801DBbec07c0D4578d",
    "userId": "506789556"
  }
}