{
  "manageEntity": {
    "action": "Update",
    "entityId": "644767279",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0f923a97e6ceb76b86b78eabd75482c2ecab23efe2951753de1a38d4daddfff9",
    "signature": "0x3c2c92ca476c662648afc2bb3b1cfd8f3ef1db0e7551aa4f4859dabec5d3dd204ae5e791d35f09c9c7a3105aba67cab636b777c3964c3e7136c6feafbb05b5b71b",
    "signer": "0xf6c9943016137F3054658e7E14F51B6d271aC325",
    "userId": "644767279"
  }
}