{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0xa9101a576750688d05762e5d32eefd29c906f42d27908b3bc8716d6616184898",
    "signature": "0xce76a4b4436f9cba76b2cbfb1f1973e0c485090d2193d40f7f214fbe0cf353fe648adcd992745147fbd955d1086418c16a35d02e97ea0ef3ff15c2e50e8984c21b",
    "signer": "0x251d9fFBc4029d5692B08aDd0a2D4ED2e2e4b94F",
    "userId": "897281977"
  }
}