{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2988",
    "entityType": "User",
    "nonce": "0xeb33e49d3ada75c1c5707ca8be9cd27a5c3f7065b25a027541be78f35b60446c",
    "signature": "0x45a003a405501f126372284e8f4f318d954ff1cd3d873beec517de9ccc9b19be48ea2a400295fcc57a672eb6af4d2a262d8821c80a5604fc9af09c6d7c36a3281b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}