{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x72a41c1ef24eb09004afe1d2ce5ead44ae90ad4d0d30dd827ab13413f85cb01a",
    "signature": "0x57af42d804617cd3ea8d6436dd1036b9409883c9fa65b464ef4c40e135adf9a70e65caa31f8a59377b4513620a505403d41b68ee3284e232be5a2b7115ce64c61b",
    "signer": "0x607D26fCBC981BBf1f9b7a1ee2EB8444b128239C",
    "userId": "68884680"
  }
}