{
  "manageEntity": {
    "action": "Update",
    "entityId": "428941685",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbc418be7acbe7fcd26d89730875e7790bbff50065e1432e5e689a1dd8bd8b92c",
    "signature": "0x0e7bc3b2db5e6ae724cb9bc6a015539841858786013ba5d19ff1cd903a8b9e1331f99f75965fbbf3c00db31425eff8a14676fad2ae5538dbc8a8e895441d3a8b1c",
    "signer": "0x9acF8CBE8f2B0d51e756C58D6d1f946A8757602F",
    "userId": "428941685"
  }
}