{
  "manageEntity": {
    "action": "Update",
    "entityId": "383439538",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd4ebb7e4c54338f6f62f8b0139e18c95d856a52cbec3b46e5de121bbc14661ff",
    "signature": "0xba866e394915e75cd31ce2b9961a7c9007f9d163b61c108ba8b9daab4b6fbb002c997a1b1c321f582e337a7e75e3c42278244ab4eafbc6b8f3d4ad738bbf9dff1b",
    "signer": "0x11Fe1C6137F89eD65656FcB954A91979d039bf43",
    "userId": "383439538"
  }
}