{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13510",
    "entityType": "User",
    "nonce": "0x681fe09fcda9415ebc4b121b1e3b05e8d16269c5a50d4beef55b7826b3657b43",
    "signature": "0x02f1714894983f80ce36136fb76e065b733754b5813cb235cfe99ef200683a140fc98697ac0afb4fbe4eb3db83521c4612106999bc4215a3faba800abcdfcdeb1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}