{
  "manageEntity": {
    "action": "Update",
    "entityId": "978371404",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xda656bd41396f7018af5aa46852b5b468101db640ec0aec6abeebd9655e1835f",
    "signature": "0x699ebfd49146d10c507a16feddb6573650b9c491a5ed27c98880e32acc3656c51136ff71f42b10c8175410ad8497f785903e293fcbcc6924af2e2ca3f56094ce1c",
    "signer": "0x50F248CE64D5874ECaE2d899ceAb9144B25E4F34",
    "userId": "978371404"
  }
}