{
  "manageEntity": {
    "action": "Update",
    "entityId": "407216161",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa70826f4c4aed64d6a76bf955ec16e222c47b3772b9b7c044a09a8fd3f2cf6be",
    "signature": "0x2ea215639e606b15ce233cb8b90a927a80dad8277d0b9d26d9dfe3ff83f8e51755ccd363ddbca1b381ddfdb630497a1f3054f3fa227bf9f68cfcc6ca27d21fa21b",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}