{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "760764",
    "entityType": "User",
    "nonce": "0x5e68851beae5bfcb6644de95f1b6106cd84f79738f6da783a466801a74cebf8e",
    "signature": "0xd2222a84762e5a7633d7ea4d9039147edd573082566d95e0856b08f8350efbe02e3729868de7a0b8b23d922f672bcc9b863a98b2cb8ef7b8863322a0e7d677f31c",
    "signer": "0x18356cfD8fCEF0CfA9c1317D9538cf9f94734021",
    "userId": "855397745"
  }
}