{
  "manageEntity": {
    "action": "Update",
    "entityId": "231915529",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf1614a2a78bd2e6d4c2746cd41e9da3e774037e070807710e9dec7224cc35855",
    "signature": "0xf3f8993a146f163a8feea260b59bcfb187c07bbac4492808fdbe741a2764c84130b5b29f231d608bc661e25baafa650c1bd77c16a79453d1b02d3d19795b53de1c",
    "signer": "0xAA9Aa5DB83C4b19b2995199cD38A88bdb33BFB49",
    "userId": "231915529"
  }
}