{
  "manageEntity": {
    "action": "Update",
    "entityId": "323426295",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradwx4kc7njugfxbn43g3kwabaiifscwnqonjc56xh356gvs55qdba\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1116320869},{\"type\":\"playlist\",\"playlist_id\":302352692},{\"type\":\"playlist\",\"playlist_id\":198542895}]}}}",
    "nonce": "0x2882a7aed0e33854514dd595f4df4f2043ae95efd19476b21a258a65f5cfb452",
    "signature": "0x2245799c2cd39f67de892e7fa4106a3a31ddd458003cdeb7afb92dbcb6a405065e6b4a564804e618ff441194e30546c790896e55cfc53e29315447e46be457901b",
    "signer": "0xb4d13032C460384cd2965fe5ce69B5d869207DfA",
    "userId": "323426295"
  }
}