{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273088956",
    "entityType": "User",
    "nonce": "0xc278f472802bb65dc5936adf2e800298276969e5c63d637643232b7ea244adb5",
    "signature": "0x404816595796fe0ca78fd3e9db78e0570e75fbd600ff675c65b09c06ea4219e05938ef09b8e8d5abc8f79e68b8502022f1fb655b8b398129ec74b271cdab77361c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}