{
  "manageEntity": {
    "action": "Update",
    "entityId": "284499948",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4524f62ace8e3319cdfb8828aaceb8e2734ab2f142aaed437e6f5a794cf39af4",
    "signature": "0x0b761facdf5d71ea44590a7e8d7aaa4518d4b40f90b2886e402d020486f89c4045ffcc6a991cc20f0baff32e743d72b644deb2b4d7c7663d4c9d0ada16a559531c",
    "signer": "0xb3A168d98332c0b778a2F474499ecF4F0c2c9c96",
    "userId": "284499948"
  }
}