{
  "manageEntity": {
    "action": "Update",
    "entityId": "479039338",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xef8bcbe3bb4c9d8041a1763765e938f4d25cce514627227c28037dff038284e3",
    "signature": "0xb17a8da1991a8c3bf39a020b94089898056ea60511a195517b0005e08ffc2f717bfeb01876ed47119efafad6c48877a835ec62310fbaeafc2d02f29340dc1a491c",
    "signer": "0xDA5EF39662B4ef70B52C25F33b5637165C93DE3c",
    "userId": "479039338"
  }
}