{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x00d83f506e1e0b09389ebbb42bd4006c788891ec602d7cab489b621c6523bb1e",
    "signature": "0x22d0526763043a2f34847bada19be6d42ad89ad48b54c35230e4327a040fc89253320c83fe412b0ac7218812f23d6e553ed8d24bb22e8f7efe422e86f9c74f771c",
    "signer": "0x3C02Dce6AcDC1527c5bB9829a675a743ECbaD62F",
    "userId": "750137068"
  }
}