{
  "manageEntity": {
    "action": "Update",
    "entityId": "589316260",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe9bdd395e6eebe843615c408748a5e310e860a7098df4cf8262dc9595f632647",
    "signature": "0xad29154262c439f8c5af9c5b358037370f721dc406419b504330e6947dac3fe444be1b2f29d9a6fb863b2b59bd5e6c66397acde461597a6720b69a770be04e981c",
    "signer": "0x0685C899cfeB9E422D8455218d2B6e1DBb3E52a5",
    "userId": "589316260"
  }
}