{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "447798047",
    "entityType": "User",
    "nonce": "0xa7efb4c026aaa1daba74d6904422d17f07761adb5d89a36960ae0adb49af9728",
    "signature": "0x56d45107510fd7c4712673eb732d7e50a6e31041ccdbaf30e4707682e79f420d3deb2a8fa66fcba855d396c8bf32fcfced08e21dd64da2f684ad02bbac584c501b",
    "signer": "0x97Ce19D122F5b51231cF4DBbd25Ac36CBDd6CACa",
    "userId": "426864186"
  }
}