{
  "manageEntity": {
    "action": "Update",
    "entityId": "369145976",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera2z6o5nqljzf2ejf3ss6cer347qyfdi66cttmnow6a2rjw5lpkeba\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":273196207},{\"type\":\"playlist\",\"playlist_id\":242671288}]}}}",
    "nonce": "0x3e38ebed24a76961992aa76d4b424600f096da0152216c40ffc8c9c3b3f1a737",
    "signature": "0x2c1bc986da2528df4eba2ef0f335b8e5a8ed21bf0b6a053bb77a7a29f00dc88108cb5c5cb47d6a8ca6cc5729f3a88b2dbb29258b4b1a4b3d1a298bdc2f7dd9d61c",
    "signer": "0xb904172F0B95C0ab98D43c7046A45F21C1a46b0b",
    "userId": "369145976"
  }
}