{
  "manageEntity": {
    "action": "Update",
    "entityId": "339826419",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7f0384c9544188249db5d2d23dea2c10d7aec5e97cd3945c6bdb2dcbd0e2ab2d",
    "signature": "0xe1a0c6a6f861d665fec0284a7dfd7209ef4504be5b13a864cfe07cd71e29a68948ceb8bd595b377580dbf84a6f39505880913fe5bf9588e7f232cd1e75e76b1d1c",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}