{
  "manageEntity": {
    "action": "Update",
    "entityId": "234122192",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraengobzeo4geng4ckophuaonwf4yve2ccw2y36p2wn7fr7azrddra\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1294305171}]}}}",
    "nonce": "0xb600280f4a1bb2e99f083627c00fd41ced317a0c6e77e9c22a2ccacfac1e8877",
    "signature": "0x2a8ab2e1feeca8a18509b652893b3ea694a7eac0f6afb759004db43d584b63a40c6fd392205b8f1df75494c96a9b36050a946bd1b208db55334107417252df441b",
    "signer": "0x436637bD14cdBAb950deA5e8ab694896216708Ad",
    "userId": "234122192"
  }
}