{
  "manageEntity": {
    "action": "Update",
    "entityId": "900342656",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x04cd68bab2397b1fc8b8396354e80cd3b044fcd51b401b5b318b454af8c70811",
    "signature": "0x045fe8743a134f371ee9f3487b609ef540093017728775f99395c94ba6e4865f46915ddc5935147e65556337f8f649699562299cf5e47711d747d0695233bfd51b",
    "signer": "0x2d00665Ec1AC27508FC4aEF572E680bc2091047b",
    "userId": "900342656"
  }
}