{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450",
    "entityType": "User",
    "nonce": "0x4fb9b880d8232c5eedf053016c72c940da6b77cc3ca3458dd40ff6e36af8bf7b",
    "signature": "0x8ba26cbba7c6faeadbc09dcb16ae11162e382aeb1fce844403ab6aca9dc109d8770892b64f9c8087b29985a33eeff8a031e63e001dd3c4bc96a900ab09e040121c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}