{
  "manageEntity": {
    "action": "Update",
    "entityId": "976268545",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9adfadf480e98977fe7837c56697f1d0ede93816bebfc4ba2153a16aa4c2ef47",
    "signature": "0x1bfb7057f27287b1d95c9d5a076a80f572729045e474dcac137f9da524086668636b97a6d75ceff215a07d4f2b2c1fcc5b81868fd9532ac417911aefa46275cd1c",
    "signer": "0x5a43e10e89F5f4b19584D61C799C8E20ECe4EbEa",
    "userId": "976268545"
  }
}