{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x76950149b7bae96fc4f4426aba2c291e584fd858edcecfb3024532062bbfd092",
    "signature": "0x801da538b21acb75277865a5d00cdd5a9e6018c78d304c8ad1ef227a95f6f14c0fc1a097d8200bcc312f330d2d57cb961b9a06244ce8bb9c8e1d83b145d77d3f1b",
    "signer": "0x1EeF7f4505C388ca4a4B9A8fC01FcFa7c805D3c5",
    "userId": "17766667"
  }
}