{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1873428",
    "entityType": "User",
    "nonce": "0x944e3f82360d9c90aa64ae66fa4822bc8717eea1a75151e88649248e025f28d3",
    "signature": "0x3177c2ac7d13575aa145f9058bd8be0ba483a5a63f416f275d61389f0fe354845fe5f96515adb7df71652c887511f74e38c15f9b3fc61554f31e221258fc17711c",
    "signer": "0x1e790323192cc7A6755829dBa7Fd3D0870FF3826",
    "userId": "921777960"
  }
}