{
  "manageEntity": {
    "action": "Update",
    "entityId": "874590393",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierayrjnfp3x3c6wlb35xlsudxybc5mz7diy35yhwzyerbunb4hjj62q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":993505395},{\"type\":\"playlist\",\"playlist_id\":1770136043}]}}}",
    "nonce": "0xcc1cff600eec03ee5f542699fb24791e31ecc5417caff30218d296a11df322af",
    "signature": "0x3a6620cbf9fa1e7b3d4a7108848417bad940b21f3478a3881636051bddab516830c4f9dadac0a236e42e1fbda41b6891e1e4e91e2038faee3aa53f2820447d061b",
    "signer": "0x3115988Ff9a4d55153BE4f41478C0d48aE97D53A",
    "userId": "874590393"
  }
}