{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "174481",
    "entityType": "User",
    "nonce": "0x74736d85e69b8348479793d5482a68ad8aa8601c53670cae8b7ebd193e771a6f",
    "signature": "0x72177579b35758af7e31e37929176fc716386467daea42ab217472f307a7b5066850715b5a4e92152b53a4094ec6405be06ace109f3746c02d608b53a410123c1b",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}