{
  "manageEntity": {
    "action": "Update",
    "entityId": "971129804",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera52uxox6c2ulgqmjkg6ntiqudktx4qnaeyyh5pzq67ttc26enwfwq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":940553898},{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0216cf4a31d3775b827362bc8ecd47217961d6d350a4ae84c0d61cf305db8e5b",
    "signature": "0x37ccd910b0e77264d7d5344b16df08f4fdaeb485ba0dead967894817ff41561108a2b86c2b56a50c70ba04fb0296b248f0a62323e4040532252d8189b75be8b41c",
    "signer": "0x3e48DC5763519fbdE0A26db7C59929E8Bb6B8Fe2",
    "userId": "971129804"
  }
}