{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "136844578",
    "entityType": "User",
    "nonce": "0xf03345855d89b658760a56044a0974296d5ea063dba392f79341192ba6d738e4",
    "signature": "0xddbd5ef6f7c964fa5aabdbc9abd748e12eb8d1edc227bc645ce0694923f13a2f580949b55cfbb5098bba49763df1a68eaa849ed0c959e9d68641a58caad053091b",
    "signer": "0x9837C03EAdfA74365Cdf4e01e6840D356104bFab",
    "userId": "911622928"
  }
}