{
  "manageEntity": {
    "action": "Update",
    "entityId": "557719484",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xeec600cfd0cfe21ace72bb43e67610f61c39a0eb028ad903a55a2bdfdaf517df",
    "signature": "0xb8d274194084975e091056e36ba29ab2e0535c7bbb34a5fec973670054305b5a4c295264540fdb002d76b01003e8f811ffdb0ecc16e69d21e95825ec633da1ac1b",
    "signer": "0x10d859818957Ee0a4B59de1cc8f5DDe16b607118",
    "userId": "557719484"
  }
}