{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "588471",
    "entityType": "User",
    "nonce": "0xaddf455b13e25b00a71e607caf29d8eb882bdfb6ba01d1c2872bd4595bcea032",
    "signature": "0x1e43232fd41851e8b31004595eaae5f4437aebffc25ddf82a91a6260fed5e6c601c4c3bb08a5900b01ee2da31bed1bbc3d302fe1777b4ba4c3ce00bed1f16f4e1b",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}