{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "909603442",
    "entityType": "User",
    "nonce": "0x52406e79302bbb13f25545bf416d028085dc4e5b05d4ed664a0a9adc6bc39a52",
    "signature": "0xf5a5b039408b09dc2d900f4f3bf002d1450f45ac1a0e934421ff070edba291094e010d17c5b0107c32994f975f5495e572d5f28cde4c2764fd80c7cf18a4986d1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}