{
  "manageEntity": {
    "action": "Update",
    "entityId": "876735576",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x94d782b511679595806cfc3ade7bdc6f634d1eb850f1cbb42e9c961521d7e3dc",
    "signature": "0x0b611d4da905d822c8c68de847bc9a5adcc2ff3e79a308baf77f143897fafb22632997293871b93f71bd3f72f1688b99907666bcbe014945c08c82a7cbd2b4451c",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}