{
  "manageEntity": {
    "action": "Update",
    "entityId": "889450527",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraeqxr23ynbeqt62rd6i5xau45mrx3fspaxcjxbf6m752vtcemmpfq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":379309757},{\"type\":\"playlist\",\"playlist_id\":1003476769},{\"type\":\"playlist\",\"playlist_id\":1706820977}]}}}",
    "nonce": "0x3e332a52cccbec669b0d53b364b9d32431e355ee03e22c256ac3f08d982baeca",
    "signature": "0x4604def33a59277166f9a1044d4a518f48b9172e95e5a9982e73a089691f3376051afc202d5d8d27d80509788f4f87a57df7b3797b80aadcbe7150308ce305031b",
    "signer": "0x4dafC3e774A1033C5604372f17ccBDcE545f478D",
    "userId": "889450527"
  }
}