{
  "manageEntity": {
    "action": "Update",
    "entityId": "667493918",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierahefni2aulh3excrjmo6ecywht7qi4uofnsjf4g37cbryb5rdp2eq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":526480428},{\"type\":\"playlist\",\"playlist_id\":569729679},{\"type\":\"playlist\",\"playlist_id\":1553511095},{\"type\":\"playlist\",\"playlist_id\":211400163},{\"type\":\"playlist\",\"playlist_id\":2109324462}]}}}",
    "nonce": "0x5b70db29a7bc3c1405f82ee2bfe7ab8a097514a44abb7dc445c598d2ce069223",
    "signature": "0xbf2e7666f78f137e4ae10ccda59bfd9577d4969a60dd9a56e31249d1b0ec0b8e496bbbeae3ba24fc2fdc00c64ded3385cea01a02c6b806cab9b2b34aa913bcd51c",
    "signer": "0x8a3adbfB0485c717fC6824B71b6D0e03830f91b0",
    "userId": "667493918"
  }
}