{
  "manageEntity": {
    "action": "Update",
    "entityId": "205029729",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x37c63bcebb8bdabed04d2f08710d950aee70900db5bccde1d7ccbf36bf7154bd",
    "signature": "0xbbc37633d221d638c42b5de336af12b24e5c8ec16e86c2a10e0138cded701817709832086f31ca7781bc17ee5c32cc7119843b06911fea5cede81b42857033031b",
    "signer": "0x83343BF7cEbA79378ba970a4f4e9A95aba8766A1",
    "userId": "205029729"
  }
}