{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6221",
    "entityType": "User",
    "nonce": "0x147f741b28f7f9b76bea7d9ba932bd15997cd6af2396f041a7b9271326ddabd9",
    "signature": "0x77230f6e6791fcd58abdd8c5480a5bd618870766fd6283ab1f58d6ef9839e2ae0348859c23ed091c62529e3cc1468ecc8fc7bf4f25975813b37334a7c649540e1b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}