{
  "manageEntity": {
    "action": "Update",
    "entityId": "573349220",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraaxwacmace4i6j7gxr3umvr4d3za4g36rrkr5oo4yralo7ylzga2a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1073628605},{\"type\":\"playlist\",\"playlist_id\":1397577310},{\"type\":\"playlist\",\"playlist_id\":1256339986},{\"type\":\"playlist\",\"playlist_id\":1145744643}]}}}",
    "nonce": "0x551a012ad65c690a5fb517accaab700d7e90d5ed866c287d32053f2bd948e79a",
    "signature": "0x5c2059719eea98c98846b71098840c748e808f986262a6ea52f8e0532d437cc86559daf0ef779f7ef97f68f493369a5b42afdfb8ac532fbc658d612b7a3a56be1c",
    "signer": "0x575E7abcF5B7487c46dF29b36e6357601C6a7427",
    "userId": "573349220"
  }
}