{
  "manageEntity": {
    "action": "Update",
    "entityId": "476541764",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x21c03a599d78c05f8affe839f18dd5d49c13021ab2b313715a8b3f6f57e18041",
    "signature": "0xdb7a5529074f9b52e54e2a30f44397ffc977c02c8481aeb5e75614294196a2f613d0874642d978e37616a2d9e83d9570ae56f3d873ebeb01fab1322ca4d016551c",
    "signer": "0x3BCF1f860B3538928156F6F30EA34f741917e098",
    "userId": "476541764"
  }
}