{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143397",
    "entityType": "User",
    "nonce": "0xa38a3e557adef223442254424bc8fc9ac00ad3852f86c87440e83e269f338ede",
    "signature": "0x06a757793e2353a0f9f61cbdf47dae9218073b9ba988489964636d9ed1aaf2f67063c74ed20b94ca7b143805b32c01cb12ea7f43fe18e37a8950daa3a1376b471c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}