{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0xfca9bbebc6fdd07e9c60f99fff125d4cac7f00a0c3bbc7017eae645231daadc8",
    "signature": "0xeee5468801a93be625c711fad5b04aa7b36af6ef8a7e87995dfd749ee4d69c3a6e24e9f2b3da58f9a63b342b1fd813c59a836a062ad69b28071931ef8228c7731c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}