{
  "manageEntity": {
    "action": "Update",
    "entityId": "791403923",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x013380f05e801411d6d71fa054d48ac3a86f7b711177c5f634c58cab425ad095",
    "signature": "0x1245de18ff40f375786c0b412fe6e457c0d663808160eb8a7b971a390224e0a516f98cd7c1e25a77741cd96f3b9afcb85561eca3f504e9e9b44bda985d4973691c",
    "signer": "0xf9594B6ce08e1A282B626aF7a5273228cEeeBE97",
    "userId": "791403923"
  }
}