{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd523ff4d4f9c79572eb86957d141673072c198ee194d529f9f274b2c189f0ecf",
    "signature": "0xe59434b52da3520a3d6898a4023cfd3a44289134ead20c2509b54e035bcefeaa7cef4263a68325517c9a532216843fb3bca827f061b7bbe7d9b8cc54877d68f81c",
    "signer": "0x15CbA89237A5fC345232C91176B89122A0EB777e",
    "userId": "804338618"
  }
}