{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "758745",
    "entityType": "User",
    "nonce": "0xe757c9d48bc9968c5090ebe2160dc22b8208a9b5a90394bcb3890647784ad281",
    "signature": "0xe782d20504f3bead2931595baab18abc33dd531e5c62092875c1ec616a4cfa9e0373edc19495203834b40408726b409eef47e3009f7177cdd50d9c0b63ef59021c",
    "signer": "0xe0f1d0Ca199D9bec117385Ce8D99EEF3b6CcB37c",
    "userId": "109379"
  }
}