{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1687199",
    "entityType": "User",
    "nonce": "0xf255dfadace232985095375bc7d0b08a729ffa4c3c3b1dfff75b9a56da69e2d6",
    "signature": "0x661d75c0ca6b3589b23ea5782f7f389c12fa0984bc6ba2d3a3be3e51d05b502d71eb0c519ca3a27c5a4ab11f44657ade1e8aa4e67f66acaa6e52428fb50a80a61c",
    "signer": "0x0f60ca71dCBe6AB80DC2FDF0Efe863EcB0A49b6A",
    "userId": "486924218"
  }
}