{
  "manageEntity": {
    "action": "Update",
    "entityId": "129121171",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2a7d6dd20dfdeb60d1d0fd9258f19782db1990dfb23c0af753ab47aaa64c1f7a",
    "signature": "0x7849656f5aa20ab162c5c36fe053035ca480263ca1bfb5a09875da44d570c97811c322110a013de15994cd23cc188996fbb674ee38b3b712384acb56d6801e5f1c",
    "signer": "0x8F792689014A16F1951Fe17ce5Fdc04a2B401f1D",
    "userId": "129121171"
  }
}