{
  "manageEntity": {
    "action": "Update",
    "entityId": "677195430",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2742e90a50d43446db2f9dd395660c373a0af6e571be8a458ce13a62b3568e81",
    "signature": "0x45cd372ec9f351bdc64a039bea0f2b481cd938fa855bc6b94f1c4bb38793e30f7ad9a560ea809955e74e1a9b121f7db3ce6148bbe7b913a696425fd57fcc99bd1b",
    "signer": "0x1EF803Ce2d7502B22176E665C40BeCdD92f49f49",
    "userId": "677195430"
  }
}