{
  "manageEntity": {
    "action": "Update",
    "entityId": "517196922",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe376f4b159bbe414ef733f8d10132ef87212ed5f477288307ff08dd81176beda",
    "signature": "0xa96189c82336ab3f4fc96877b9fd39d28dd60819286fa92b6d0da6405923302a7413a4442d718cb5d88e3ac4728cbaa441dfaa4ee9f3996dfac45727bfb5b92f1b",
    "signer": "0xA72FE6b3e29606836C66bB1c369b98CF57B8F1d3",
    "userId": "517196922"
  }
}