{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "877304859",
    "entityType": "User",
    "nonce": "0xd3ce97979143cf0f524bc716d26eda5804ec9a629c7fb5628a3574a574e9f36c",
    "signature": "0x678425b9bd48794344a5cb107d7c9455030f274d7135dec3ec7062aaf80116327803fb253d8ce31ab35e787e81802d84ab8fe734fe5ea1dbb739ccb9b6d7cb581c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}