{
  "manageEntity": {
    "action": "Update",
    "entityId": "904135952",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe09645da2ed48ca5b5662fce4c6e95552b0ecc02fac32744e14ab1595b5a382b",
    "signature": "0xe79e80993ad81bae517b80a8a71fdaf82ab4990d3d3158ae786776a0c1bbdd376ce528988250dec8851199c90395a4d4dae6916c5bb569c36e734486502f829b1c",
    "signer": "0xd8cb6464758a4C3d1456Ff368AA1AeAeb28ce65E",
    "userId": "904135952"
  }
}