{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd1e1de8e7fd181d8b61a6c6d747027bf2665f196ecff5fe853ac92383b0478d9",
    "signature": "0xde064cf1a700d48a7d182aa28302d930b6d9272be2cce1bbdc73a3ac49d6e7646d1d216a5307b3f6f272c3f5e22dafd9cba4f61994c757961accb4b80f9e176a1c",
    "signer": "0x2ddd8834CFF73636F06E24BA44E53dE3e589dC56",
    "userId": "610520992"
  }
}