{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319704",
    "entityType": "User",
    "nonce": "0x14361715310bdd2ad07579035053482bb9d28c8c1051b02801401d13e6460de7",
    "signature": "0xd2c0892ef0f36749d7088a305b01d8ce24d663e5c745a99ff46f7fb89663c7c1718933787905733562153ca02c187dbb3f6784bc619e1af230752f38e64a22871c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}