{
  "manageEntity": {
    "action": "Update",
    "entityId": "191431739",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x69012977b9be203256e0e833c6fbfff370e86a1e1d8c41e7a77a8a0c700d00fa",
    "signature": "0x3dc6841889a64f4b09b77516c9fa1dfb2d7613610c5cdd0845e43905cb99b6997f97aa8e6ca0f5495b6e901a84fd3737827acfdad3be1153a993bccc35169da11c",
    "signer": "0x5fc3e2aE6E07030C8cda830de687f40eB04B40B8",
    "userId": "191431739"
  }
}