{
  "manageEntity": {
    "action": "Update",
    "entityId": "616597835",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbe4fb49461fcb565cb5810b642c1d3c27e2912eae6ce5e89ed3f02c4f1c8b298",
    "signature": "0x61992ecdf8635dd6c016a83dbd9aa533af3ea70031a73eef88b43ddddf9093bd22d92cdb4560e14e4a6c5576023fe45cf715256a9c066b95f35251142a4295ce1c",
    "signer": "0xe9B3548997c57545A6352D16A021F6df1a01747f",
    "userId": "616597835"
  }
}