{
  "manageEntity": {
    "action": "Update",
    "entityId": "783337209",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera62tvofvpdomf7rgkdeka54e5noyhmdgp4dt7xce57plnw24kjcra\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":528111543},{\"type\":\"playlist\",\"playlist_id\":966050134}]}}}",
    "nonce": "0xc7711c9ceb930435f48feb5764bdbe641cc3aedfc913da5ded9edf73b457281e",
    "signature": "0x4be086c7b7221b55eab12b36c05fc48f6f37ea73f2e8ccaf415f0d373801c4f2005020ee159140c1aca96f275359d343adccbaa4dd286fdf397d5d36dadf355d1b",
    "signer": "0xdB453B3e8F14c70b8129c91f28aFFc16291F53f1",
    "userId": "783337209"
  }
}