{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0x621bb25cd48403c95478b55ff46e23e2c2ff2b72c979b660da37d79284e8c468",
    "signature": "0x56c08553b94e35722859d1ddbfab67a698e143ea219068f5aeca9801418e7d7f01ebbc9f72f0abd078394fe96d4193be45377444c18f323f1f7ae9468d2ef4441c",
    "signer": "0xe7dEcB818fCe078fcBE1bDD38AfdE42155dd2CF0",
    "userId": "395698740"
  }
}