{
  "manageEntity": {
    "action": "Update",
    "entityId": "609391289",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb519767b807d0335a1702767c3b43ed7f503a536a7d89c18965d86645e83755c",
    "signature": "0x8edd3fafab9168e3a9335b28094e5dbc9d6cd9f7767b230b0a06ce509aa062dc7669421cfbe01049a35ab2602e26c10d268ab29be616aa2ec0fa115108198c8f1b",
    "signer": "0xdbA357EFDfe46052De520AB4d7273f64e33BEAb1",
    "userId": "609391289"
  }
}