{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30143",
    "entityType": "User",
    "nonce": "0x1172cc8a1fad26edced92636ec117c92dbad38a79dee930aecf772707865ce68",
    "signature": "0xbac4c272355772900dd5cca8e01c4a7aaec88738ed60edd7b1a9fd15950c2b426eeb4cfcd3c536da786124331fe37ecc3497d48d87011df3456786ee3386155f1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}