{
  "manageEntity": {
    "action": "Update",
    "entityId": "309988528",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7478b2f05f7e953cb4ef1a8a42b7c0bd0826ec7e7041d6262405130bc32b9435",
    "signature": "0x1d441f44b9297f4c02f51a4be793e5d6d39a671205bf74d6954e656530a0435c41deeaa67eb4ae6014bfcedabf4368bf2d4265bd425630a22e04b60ae4675fd11c",
    "signer": "0xa8b44068A4C55AeD58458160E334DB91E5d88320",
    "userId": "309988528"
  }
}