{
  "manageEntity": {
    "action": "Update",
    "entityId": "879639434",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xad63e9b8458cf8bf4c9525aa2d35e3f72522c96da78dc08d42c9c4a2be8f42c9",
    "signature": "0x73b83c08a13c56947ceae2159c1626bea7969a2931b998a62d7bec5bf5825a3f34bfb7b38fa5392e39f501911a6844f68df97abb7d1b1b144ca1d405656697d31b",
    "signer": "0x9be428b83c69Ab7278342767c9062d747a7f6399",
    "userId": "879639434"
  }
}