{
  "manageEntity": {
    "action": "Update",
    "entityId": "674161758",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1778ac4da9ed64cce76a5fba283c8f3cd408657946b4ea270e6ab2af3ce8bf79",
    "signature": "0x60d52b79c9f28e3b5a33629d915937e6f078344bb28220f86c5ba9ce1b9f543c6370235d0a607d8ece8b4a8f1d15678c61983ba8982f7af27b3337648f009d511c",
    "signer": "0x164256fD3FeF02d3668FFDf40A2E946c11B9492e",
    "userId": "674161758"
  }
}