{
  "manageEntity": {
    "action": "Update",
    "entityId": "818729581",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x89750dfc9a2ef4c2618082f875453e353d387158388a9f140a6273bf6853da30",
    "signature": "0xc1f3ea2b52059d9cfbf0eca2d33013c0985dbd83bb217124341127fcb5174fcc55768132dee3dcd65e521165c9f30576ea5e4070c2d9780d01622d432348f6b51b",
    "signer": "0xBD71320345f9dF830009d1647c1C62F641a6AFd5",
    "userId": "818729581"
  }
}