{
  "manageEntity": {
    "action": "Update",
    "entityId": "810291807",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x009b8ef2ec94efcffa875937311a7dd8e953d64e8cc8f66267fe07dbbea4f17f",
    "signature": "0x2c2eb195f69a9f2002588424c811d68f5320a8777cc918875ca7808b7e12fcbb66b3759c227fa0da9354acafcf07b74653508cb2316cefd61bd936079538d1eb1c",
    "signer": "0xcC37fc45282182aFe751c3a765f808633C4cAAD3",
    "userId": "810291807"
  }
}