{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x1ce8d116f1d37611ef594888c597c8a7faa6e3df8d96147b558bee0125ba71c5",
    "signature": "0xf290b6403cb23fafbc55a87d94e82fd41503673890bb16e28f74eafdeafea28d0431953e7c4a1d16fbde8914177e7d764023557b0cd43bfcb350cad31e0b71d11b",
    "signer": "0xf4e39f23021D832A7D8e37A3e280Bb0E5bC75bFC",
    "userId": "406892069"
  }
}