{
  "manageEntity": {
    "action": "Update",
    "entityId": "330409911",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb4cc06c0c345b4bd3fabdd10363f7e9809d158886af58a064e532aea97a94971",
    "signature": "0x0d0540d3032e209301d23538b04e94bf746b8b737e0f69bb4645b5b55ffc8fb56c919eded6cc9027d67d418212e9a889a00d910e9d317ec02aec308efceb42801c",
    "signer": "0x55ADD358aa95419E72E26Ef1469945773C7615EE",
    "userId": "330409911"
  }
}