{
  "manageEntity": {
    "action": "Update",
    "entityId": "522902911",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierav3gc2u6umr2u3hzv2xbqgcuaxpummn5tdyrjjs6xkijgp75tlp5q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":555408497},{\"type\":\"playlist\",\"playlist_id\":1748811053},{\"type\":\"playlist\",\"playlist_id\":309892706}]}}}",
    "nonce": "0x8ff69ea626970ef16a72820eaf1d04a0424165e8a9cff76cee60425dbcb67cb3",
    "signature": "0x0d7853aa8bad39eac702b7da38c55b8ce130d7866e31b37fbd391baea15f9f695c42822ab7db8865c61aa55b8a78b7300c0706e3e998b001aea6d0ca65a168681c",
    "signer": "0x064F47ceA1BD6c7f4E75eEaF6208Ca039d0c2D01",
    "userId": "522902911"
  }
}