{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "776777962",
    "entityType": "User",
    "nonce": "0x15ca0687284c5309ab6935052f7318ab3a84d2cd6fc30c6ee53c28ef54783b51",
    "signature": "0xf33542c578672e7d292ee436c36924b302dff6ac7f459a35360fdd54ecd832bc39cc6ae010ad5ab44e532fdda1380b48fb3a7e5f33d856f22297cd8115bd81e71b",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}