{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "837713671",
    "entityType": "User",
    "nonce": "0xf549582783f98396b1e05e4d39f1cd81934517e4eebc4866c3c84a08297a4a48",
    "signature": "0x88a76e03b201641c73a8ed1383a614da7e403f8f6162883c00d698c511ef236e3b5bc4c227ff51def9e1a774086c8692bbd3415efeceb7faacb7e84b9fc84ff41c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}