{
  "manageEntity": {
    "action": "Update",
    "entityId": "581961575",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraunirugvn6kyiuqofl5wonazxaksudc24eijijyxgld6qciamarra\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":6484708}]}}}",
    "nonce": "0xd3a453b9e845cf5c9d808cd291182ddcb3391c2ba4efb7d58d10b19006307815",
    "signature": "0xd2682ec9b07bc4fc7d01e173b81b012aa5c6362b9e5e2c0245e9880aeb95086f3e56a18c17f2ffb5560cb2d21ad3322a4ee8dd178621bab1eac136888b811b841c",
    "signer": "0x36bF844011cc82D2dd84dcC98363aD4d970e331d",
    "userId": "581961575"
  }
}