{
  "manageEntity": {
    "action": "Update",
    "entityId": "305353649",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x12af1dee04bfaf87343fdccc89f62d255a5170d22b4f7f255bafb226d98b08a5",
    "signature": "0xfd0daef2b47c387ec59bb7b51f288dd1744036b048949ea449f763da4a0d95af675c501876544cc553de47f808949fa36e6c0ce59120d05086f85627eac9849e1b",
    "signer": "0x5f950b4Af195b1A91Ed521De4Edd9533a68dcE5C",
    "userId": "305353649"
  }
}