{
  "manageEntity": {
    "action": "Update",
    "entityId": "757013463",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieranmyrnavxrxmlonicyqt7cccbsoelh5bajyoixx22ocbpswrbdkka\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1088937055},{\"type\":\"playlist\",\"playlist_id\":489098719},{\"type\":\"playlist\",\"playlist_id\":694015459}]}}}",
    "nonce": "0x47757f5c1f051997402f9900cc6e36e781e25a15e3f0414f67d45c5d2fc36184",
    "signature": "0xbbbe3efe239ae0ca919203eb6fb056d026f61ad6ace7a4531dbaa159d84af2254113570469f054e2b420e6d8e1141b70b7d7f6176c37d49b85fed082cf4595971b",
    "signer": "0xa6da5532f61f2004913a6012d3973205336c6d51",
    "userId": "757013463"
  }
}