{
  "manageEntity": {
    "action": "Update",
    "entityId": "415001454",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7859bfc01e9e0bb20a8fea1ad13787b1cf979d3605e1a0aaae170a51c06116be",
    "signature": "0xe4c6b596816d4e109878b0c8a1151ce608a349b23715b6c0a0f73f57a13686a3663b9ed54973d3f95a9bf2fe4c11bb8a51aa989a160ddcdabb7b8adefd1ceabb1c",
    "signer": "0xEc546C3d3ceA644cc0aA21232940466A1E6780F4",
    "userId": "415001454"
  }
}