{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1683",
    "entityType": "User",
    "nonce": "0xa008dceac607980008961a69011cd339c7fe13ec2b49228882d524817845af95",
    "signature": "0x2cc0f703822af6ae199498800863d8704662dd08efd462317dd9ec069bc7175e0580c4d47003d5bf9c274955593c0460db5f9c048b96a774e7ebc9c2c09e3d401b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}