{
  "manageEntity": {
    "action": "Update",
    "entityId": "616454245",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc2c06dead576134fd85bd2fc9894efe6a4ad1ffc40e7213f8b586b8e22a3743c",
    "signature": "0xec5709cea61890c236036c8679a5dc205252ee271dbbb077752313ab2b97aac535403905aaee47ee43847fb41cca947e0112f8a3e7260ae6bf09dbef00d3f93c1c",
    "signer": "0x6cB2837bF470d43cD05f9731F22A9F53a436101C",
    "userId": "616454245"
  }
}