{
  "manageEntity": {
    "action": "Update",
    "entityId": "837850252",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x13c57a085a36de979f5b02a320b9ac13a5aa9a37ae762175efe1222a16fb455c",
    "signature": "0x32ad3c0d0aa95b4ff94bd095066fd84fd5b90c291225c30abf5f17c40c55d45c0cf6a24be5438a306444b0ae769d319407a63fea73c746397ba14bfa8a60007e1b",
    "signer": "0x169229478e16Bd542267C381eCb524742FBcb469",
    "userId": "837850252"
  }
}