{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x65c22fe3288085d421aead0bbe091503add0da8e85c613d4b8e125f3387b088b",
    "signature": "0xa9ca8fce94a1886ebeba20c9ba37621b1fcfbc7f7c3f05601c7d66f9216480b1559514c015599fcdfb87e2b3ff1b7117e331f3d5a32ed36e8ff12e552fe376241b",
    "signer": "0x6cc02dBC8532e51C4ebed0D1F358F31DA8590Ee8",
    "userId": "590670621"
  }
}