{
  "manageEntity": {
    "action": "Update",
    "entityId": "473911971",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x83428ef33f5b1fa44b5f8371d547f10f1f99683dc048dc518c0162428cdc8e86",
    "signature": "0xc552e723e6b49c490bd4d88749fc38682108ee15af715d6b11c1cf362bfed86c032566cc603900bac0ba6fd8a24acc6630d4b4439db2ccd40690a963e12c31021c",
    "signer": "0xfffF643204D053ae5bFC296Aa20F15313084C719",
    "userId": "473911971"
  }
}